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Rayan
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 days
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Difficulty:
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Status
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Custom test
Problems
#
Name
484C
Strange Sorting
implementation
,
math
2600
x594
484B
Maximum Value
binary search
,
math
,
sortings
,
two pointers
2100
x7080
484A
Bits
bitmasks
,
constructive algorithms
1700
x11487
483B
Friends and Presents
binary search
,
math
1800
x4096
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x23258
482E
ELCA
data structures
,
trees
3200
x177
482D
Random Function and Tree
combinatorics
,
dp
,
trees
2700
x537
482C
Game with Strings
bitmasks
,
dp
,
probabilities
2600
x935
482B
Interesting Array
constructive algorithms
,
data structures
,
trees
1800
x6582
482A
Diverse Permutation
constructive algorithms
,
greedy
1200
x9670
480E
Parking Lot
data structures
,
divide and conquer
2800
x571
480D
Parcels
dp
,
graphs
2600
x460
479E
Riding in a Lift
combinatorics
,
dp
1900
x5175
479D
Long Jumps
binary search
,
greedy
,
implementation
1700
x4797
479C
Exams
greedy
,
sortings
1400
x29900
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7933
479A
Expression
brute force
,
math
1000
x95409
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x221
478D
Red-Green Towers
dp
2000
x6059
478C
Table Decorations
greedy
1800
x18388
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x36931
478A
Initial Bet
implementation
1100
x25782
477E
Dreamoon and Notepad
data structures
3100
x135
477D
Dreamoon and Binary
dp
,
strings
2700
x527
476E
Dreamoon and Strings
dp
,
strings
2200
x1972
476D
Dreamoon and Sets
constructive algorithms
,
greedy
,
math
1900
x4695
476C
Dreamoon and Sums
math
1600
x5752
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x31148
476A
Dreamoon and Stairs
implementation
,
math
1000
x44442
475F
Meta-universe
data structures
2900
x230
475E
Strongly Connected City 2
dfs and similar
2700
x413
475D
CGCDSSQ
brute force
,
data structures
,
math
2000
x4996
475C
Kamal-ol-molk's Painting
brute force
,
constructive algorithms
,
greedy
2100
x786
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8531
475A
Bayan Bus
implementation
1100
x4779
474F
Ant colony
data structures
,
math
,
number theory
2100
x8854
474E
Pillars
binary search
,
data structures
,
dp
,
sortings
,
trees
2000
x3416
474D
Flowers
dp
1700
x25604
474C
Captain Marmot
brute force
,
geometry
2000
x3132
474B
Worms
binary search
,
implementation
1200
x49272
474A
Keyboard
implementation
900
x46125
472G
Design Tutorial: Increase the Constraints
bitmasks
,
data structures
,
fft
2800
x407
472F
Design Tutorial: Change the Goal
constructive algorithms
,
math
,
matrices
2700
x259
472E
Design Tutorial: Learn from a Game
constructive algorithms
,
implementation
2800
x131
472D
Design Tutorial: Inverse the Problem
dfs and similar
,
dsu
,
shortest paths
,
trees
1900
x5456
472C
Design Tutorial: Make It Nondeterministic
greedy
1400
x6366
472B
Design Tutorial: Learn from Life
1300
x7445
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x60834
471E
MUH and Lots and Lots of Segments
data structures
,
dsu
2700
x82
471D
MUH and Cube Walls
string suffix structures
,
strings
1800
x8264
471C
MUH and House of Cards
binary search
,
brute force
,
greedy
,
math
1700
x3571
471B
MUH and Important Things
implementation
,
sortings
1300
x5964
471A
MUH and Sticks
implementation
1100
x13434
470H
Array Sorting
*special problem
2300
x189
470G
Hamming Distance
*special problem
2300
x95
470F
Pairwise Sums
*special problem
2300
x106
470E
Chessboard
*special problem
1900
x198
470D
Caesar Cipher
*special problem
1900
x153
470C
Eval
*special problem
1900
x255
470B
Hexakosioihexekontahexaphobia
*special problem
1800
x260
470A
Crystal Ball Sequence
*special problem
,
implementation
1400
x677
469B
Chat Online
implementation
1300
x12725
469A
I Wanna Be the Guy
greedy
,
implementation
800
x99326
468E
Permanent
dp
,
graph matchings
,
math
,
meet-in-the-middle
3100
x323
468D
Tree
graph matchings
3100
x367
468C
Hack it!
binary search
,
constructive algorithms
,
math
2500
x2426
468B
Two Sets
2-sat
,
dfs and similar
,
dsu
,
graph matchings
,
greedy
2000
x4257
468A
24 Game
constructive algorithms
,
greedy
,
math
1500
x8008
467E
Alex and Complicated Task
data structures
,
dp
,
greedy
2300
x789
467D
Fedor and Essay
dfs and similar
,
dp
,
graphs
,
hashing
,
strings
2400
x1861
467C
George and Job
dp
,
implementation
1700
x14790
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x37956
467A
George and Accommodation
implementation
800
x124540
466E
Information Graph
dfs and similar
,
dsu
,
graphs
,
trees
2100
x2248
466D
Increase Sequence
combinatorics
,
dp
2100
x3235
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x36562
466B
Wonder Room
brute force
,
math
2000
x4932
466A
Cheap Travel
implementation
1200
x64336
465B
Inbox (100500)
implementation
1000
x10453
465A
inc ARG
implementation
900
x10076
464E
The Classic Problem
data structures
,
graphs
,
shortest paths
3000
x1507
464D
World of Darkraft - 2
dp
,
probabilities
2700
x671
464C
Substitutes in Number
dp
2100
x1857
464B
Restore Cube
brute force
,
geometry
2000
x1713
464A
No to Palindromes!
greedy
,
strings
1700
x5920
463E
Caisa and Tree
brute force
,
dfs and similar
,
math
,
number theory
,
trees
2100
x1618
463D
Gargari and Permutations
dfs and similar
,
dp
,
graphs
,
implementation
1900
x6567
463C
Gargari and Bishops
greedy
,
hashing
,
implementation
1900
x8768
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x27501
463A
Caisa and Sugar
brute force
,
implementation
1200
x9276
462B
Appleman and Card Game
greedy
1300
x14535
462A
Appleman and Easy Task
brute force
,
implementation
1000
x16963
461E
Appleman and a Game
binary search
,
shortest paths
,
strings
3000
x451
461D
Appleman and Complicated Task
dsu
,
math
2800
x366
461C
Appleman and a Sheet of Paper
data structures
,
implementation
2200
x1336
461B
Appleman and Tree
dfs and similar
,
dp
,
trees
2000
x5792
461A
Appleman and Toastman
greedy
,
sortings
1200
x15562
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x343
460D
Little Victor and Set
brute force
,
constructive algorithms
,
math
2300
x1003
460C
Present
binary search
,
data structures
,
greedy
1700
x6253
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